Andricus sessilum
Andricus sessilum is a of in the , a group known for inducing distinctive growths called on oak trees (Quercus spp.). Like other members of the Andricus, this species exhibits high , with females laying in oak tissues to initiate gall formation. The developing secretes chemical signals that manipulate plant growth, creating a specialized structure that provides both food and shelter. Cynipid gall wasps are among the most diverse gall-forming , with each species typically producing a characteristic gall on specific plants or plant parts.
Pronunciation
How to pronounce Andricus sessilum: /ˈændrɪkəs ˈsɛsɪləm/
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Host Associations
- Quercus - Specific oak not confirmed in provided sources; typical for Andricus species to be restricted to particular Quercus species or sections
Behavior
Females use their to inject into oak tissues, initiating formation. The develops within the gall, secreting substances that redirect plant growth to form the protective structure. emerge by chewing through the gall wall.
Ecological Role
As a inducer, modifies oak tissue structure to create microhabitats that may subsequently be utilized by other organisms (, , ), contributing to local .
Similar Taxa
- Other Andricus speciesAll Andricus induce on oaks; differentiation requires examination of gall , location on (leaf, twig, ), and specific oak species
- Other Cynipidae genera (e.g., Disholcaspis, Acraspis)Different of often target different parts or produce distinct forms; A. sessilum would be distinguished by its specific gall characteristics and association